We (RE's) used to tow trailer's with 2 x Class 60 trackway, Giant Viper and Python MCLC (Still in use) - although the trailers could be used to carry other equipment, REME Warriors tow a trailer that can carry stores or 2 spare engines (or a mix), we also towed minelayers, stores and bridge trailers behind our FV 432's.

(Photos are owned by the Dutch Ministry of Defence. Not for commercial use.)

Also, something interesting to note is that the sprocket, due to whatever reason, could be insanely difficult to remove, to the point where tankers used another Centurion to pull it off its axle. It... didn't always end well.

I should have a photo of it somewhere, but I have no idea where I stored/saved it. I'll post it when I've found it.

What is with the British and putting trailers on tanks. Why couldn't they take a cue from the soviets and stick a couple of fuel barrels on the side or the rear.

We use the trailers for a lot more than just fuel (although fuel trailers like the mono wheel are long gone). The mono wheel did not have a long life with the British as they modified their cents with additional fuel on the vehicle (although the range was still pretty short - people keep going on about the Cents poor range but it was no worse than the M48 iirc)

Tank trailers might not be as bad as they seem. During the Iraq War, at the Battle of Nasiriyah, M-1 Abrams tanks were going into Nasiriyah to support marines. The Abrams didn't have trailers though, they had fuel bladders strapped to the outside of the tank. As soon as they started taking heavy fire, the Abrams cut away the fuel bladders and subsequently ran low on fuel and had to withdraw from the battle.

So compared to strapping giant bags of gas to the outside of one's tank, a trailer doesn't look like such a bad idea.